2004/09/30 by Y. Yan, C. Kobdaj, P. Suebka +6 · 9 citations
Physics and Astronomy · #Annihilation #Hadron #High-Energy Particle Collisions Research #Meson #Nuclear physics #Omega #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark model #Quarkonium #Vector meson #hep-ph
paper · pdf · doi:10.1103/physrevc.71.025204
published in Physical Review C 71(2) (American Institute of Physics) · 15 pages, 6 figures
arxiv created 2004/12/28 · openalex publication_date 2005/02/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The reactions e+e^\ensuremath-\ensuremath→\ensuremathπ+\ensuremathπ^\ensuremath- and e+e^\ensuremath-\ensuremath→\stackrel\underlineNN with N=p,n are studied in a nonperturbative quark model. The work suggests that the two-step process, in which the primary \stackrel\ensuremath-qq pair first forms a vector meson which in turn decays into a hadron pair, is dominant over the one-step process in which the primary \stackrel\ensuremath-qq pair is directly dressed by additional \stackrel\ensuremath-qq pairs to form a hadron pair. To reproduce the experimental data of the reaction e+e^\ensuremath-\ensuremath→\stackrel\ensuremath-nn and \stackrel\ensuremath-pp, a D-wave, \ensuremathω-like vector meson with a mass of around 2 GeV has to be introduced.